When contentious Democratic Party platform negotiations finally came to a close late on Saturday, progressives again left disappointed.

The losses stung progressives already dismayed by the committee's refusal to oppose the Trans-Pacific Partnership (TPP) trade deal in the platform earlier that day, among other defeats.

"I'm very disappointed," said Steve Wisniewski, president of Communications Workers of America Local 3108 in Orlando, to the Orlando Sentinal. "I'm so disappointed that I walked out, as many of my friends as well did … [We] walked out in disgust."

"If the Democratic Party can't even just state that the Israeli squatter settlements are illegal, which is what the U.S. signed on to when it ratified the Geneva Conventions, then it should change its name to the Colonial Party," argued political commentator Juan Cole.

An amendment supporting renewable energy sources over fracked gas was included in the platform, which some environmentalists saw as at least a partial victory.

After such a the divisive series of meetings, the final hearing "erupted into chaos" at the end of the night, according to one attendee, when Clinton supporters proposed a "unity" amendment that would have the platform explicitly voice support for Clinton.

National Nurses United union president RoseAnn DeMoro decried the proposal as "arrogant":

Dr. Cornel West, a Bernie Sanders appointee to the committee, at one point called on progressives to "keep the pressure on" elites to bring about real change.

Sanders supporters also vowed to "take the fight to Philadelphia" to the Democratic Party convention in a last-ditch effort to pressure the party to support the progressive issues at the core of Sanders' presidential run. The convention runs from July 25-28 in Philadelphia, Pennsylvania.

Those opposing the TPP are hoping to force a floor vote on the trade deal at the party's convention. Both leading Democratic candidates publicly oppose the TPP.

Progressives took to Twitter to voice their disappointment with the platform: